Screw head



1. Screw head

1.1: Left side perspective view;

1.2: Right side perspective view;

1.3: Bottom perspective view;

1.4: Left side view;

1.5: Bottom view

1.6: Top view;

1.7: Front view.

The dotted lines represent portions of the screw head and form no part of the claimed design. 

CLAIM The ornamental design for a screw head, as shown and described. 